Basic Mechanical Engineering (3110006)

BE | Semester-1   Summer-2020 | 11-06-2020

Q4) (c) 

Calculate the energy consumed in one month for following conditions: COP of air-conditioning unit: 5; Capacity of air conditioner: 2 TR; No of air conditioners: 8; All air conditioners run for 4 hours/day.

Given data:
COP = 5
Q = 2 TR = 2 × 3.5 = 7 kW
No. of  air conditioners= 8 
t = 4 hrday
 
Calculate:
energy consumed in one month = ?
 
Solution:
 
COP = Q W power input 
 
 
W = Q COP  =  7 × 8 5 = 11.2 kW
 
Energy consumption in one month = Power × no.of hours × days = 11.2 × 4 × 30 = 1344 kWhr

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